<!DOCTYPE html>
<html lang="en">
  <head>
      <meta charset="UTF-8">
      <title>计算</title>
  </head>
  <body>
  <h1>计算器</h1>
  <form action="calServlet">
    num1:<input type="text" name="num1"><br/>
    num2:<input type="text" name="num2"><br/>
    <input type="submit" value="提交">
  </form>
  </body>
</html>